title: Hybrid NS ligands supported Cu(I)/(II) complexes for azide-alkyne cycloaddition reactions.
abstract: Three copper complexes of nitrogen-sulfur donor ligands, [CuBr₂(L1)] (1), [CuCl₂(L2)₂] (2) and [Cu₂I₂(L3)]n (3) (L1 = bis(2-cyclohexylsulfanylethyl)amine, L2 = 2-(benzylsulfanylmethyl)pyridine and L3 = 2-(4-pyridylsulfanylmethyl)pyridine), have been synthesized and characterized by single-crystal X-ray diffraction (XRD), powder XRD and TGA analysis. Complexes 1 and 2 are mononuclear Cu(II) complexes and are EPR active with distorted square-pyramidal and octahedral geometry, respectively. Complex 3 is a two-dimensional tetrahedral Cu(I) coordination polymer with 16- and 20-membered metallocycles. These complexes show good catalytic activities for one-pot azide-alkyne cycloaddition reactions in CH₃OH-H₂O.
authors.affiliation: Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore. bais@imre.a-star.edu.sg
authors.forename: Shi-Qiang
authors.initials: SQ
authors.lastname: Bai
authors.forename: Lu
authors.initials: L
authors.lastname: Jiang
authors.forename: Jing-Lin
authors.initials: JL
authors.lastname: Zuo
authors.forename: T S Andy
authors.initials: TS
authors.lastname: Hor